489-P5-LO-A20-E是通用电气SR系列继电器中的阿格多线继电器与通用电气多线469电机保护继电器和通用电气多线735馈线保护继电器属于同一系列。489-P5-LO-A20-E设计用于发电机保护，可用于感应或同步发电机。该装置可在25、50或60赫兹下运行。489-P5-LO-A20-E设计有40个字符的显示屏，允许用户查看数值信息、诊断和设定值。前面板包括数字键盘、状态指示器、数值上下键、RS232端口接口以及控制和编程键，包括复位、输入、菜单、菜单向上和菜单向下键。这允许在不连接外部计算机的情况下进行控制。
SR489-P5-LO-A20-E
背板包括12个RTD输入、6个输出继电器、2个RS485通信端口和4个VT输入。RTD可现场编程。通信端口可以使用高达19200 bps的ModbusRTU或DNP 3.0协议或两者都使用。489-P5-LO-A20-E的背板还包括四个隔离的4-20 mA模拟输入和输出以及七个可分配的数字输入。有七个CT输入用于三相输出/三相零线和接地电流检测，以及一个独立的安全和滤波器接地。489-P5-LO-A20-E上的所有输入满足SWC、C37.990 EMI、RFI抗干扰性。
SR489-P5-LO-A20-E
489-P5-LO-A20-E is the Agduo line relay in the General Electric SR series, which belongs to the same series as the General Electric multi line 469 motor protection relay and the General Electric multi line 735 feeder protection relay. 489-P5-LO-A20-E is designed for generator protection and can be used for induction or synchronous generators. The device can operate at 25, 50, or 60 Hz. The 489-P5-LO-A20-E is designed with a 40 character display screen, allowing users to view numerical information, diagnose, and set values. The front panel includes a numeric keyboard, status indicator, numerical up and down keys, RS232 port interface, and control and programming keys, including reset, input, menu, menu up and menu down keys. This allows for control without connecting to external computers.
SR489-P5-LO-A20-E
The backplane includes 12 RTD inputs, 6 output relays, 2 RS485 communication ports, and 4 VT inputs. RTD can be programmed on-site. The communication port can use up to 19200 bps ModbusRTU or DNP 3.0 protocol or both. The backplane of 489-P5-LO-A20-E also includes four isolated 4-20 mA analog inputs and outputs, as well as seven distributable digital inputs. There are seven CT inputs for three-phase output/three-phase neutral and ground current detection, as well as an independent safety and filter grounding. All inputs on 489-P5-LO-A20-E meet the anti-interference requirements of SWC, C37.990 EMI, and RFI.
SR489-P5-LO-A20-E
PLC内的I/O模板，除一般的DI/DO、AD/DA模板外，还发展了一系列特殊功能的I/O模板，这为PLC用于各行各业打开了出路，如用于条形码识别的ASCII/BASIC模板，用于反馈控制的PID模板，用于运行控制、机械加工的高速计数模板、单轴位置控制模板、双轴位置控制模板、凸轮定位器模板、射频识别接口模板等，这在以后还会有很大发展。另外在输入、输出的相关元件、强干扰场合的输入、输出电隔离、地隔离等方面也会更加完善。
SR489-P5-LO-A20-E
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